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MT1000 prism fell to the ground - is it broken?

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(@landmanjohn)
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I knew it might happen one day. I leaned my MT1000 against a wall and it fell in slow motion to the concrete. Doh!!!

Apart from a few scratches all seems okay. LEDs appear to be okay and no prism covers are cracked.

Is there anything I need to do to check its still in good working order?

 
Posted : July 20, 2019 1:32 pm
(@freefallin1309)
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If no diodes are broken, and all prism glass is intact, probably just check into existing control . The diodes, if broken, will throw off your vertical accuracy a bit, even if just 1 little diode is cracked or broken.?ÿ

 
Posted : July 20, 2019 2:21 pm
(@stephen-ward)
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Put it on a tribrach, shoot it, rotate till the next prism is lined up with the instrument, shoot again, continue until you have shots on each prism. Compare results.?ÿ

 
Posted : July 20, 2019 8:54 pm
(@landmanjohn)
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Posted by: @stephen-ward

Put it on a tribrach, shoot it, rotate till the next prism is lined up with the instrument, shoot again, continue until you have shots on each prism. Compare results.?ÿ

I like that - great idea thanks

 
Posted : July 20, 2019 10:51 pm
(@Anonymous)
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That's an interesting setup. Is this prism adaptable to other robots ( i.e Leica 1200 series)? I assume there is send/receive unit on the instrument end also.

 
Posted : July 21, 2019 9:34 am
(@stephen-ward)
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@beartow

It's called Active Track and Trimble is the only one I'm aware of that uses that system.  The MT1000 has a knob that allows you set the target ID from 1-8.  Trimble Access has a field when you set up your prism that lets you specify the target ID. You could run up to eight Trimble robots on a single site without worrying about tracking the wrong prism.

 
Posted : July 21, 2019 11:59 am
(@Anonymous)
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@stephen-ward

Okay, that makes sense. I thought the knob allowed channel switching like walkie-talkies. I would never have to worry about multiple prisms on a site, but active prism tracking would be nice. Especially on heavily wooded sites.

 
Posted : July 21, 2019 12:08 pm
(@rover83)
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In addition to Stephen's suggestion, I would compare results between passive and active tracking mode.

Don't forget about semi-active mode - the LEDs are used for tracking when moving, but when you take a standard measurement it will switch to passive mode for the shot, which will tighten up that precision. So if there seems to be an issue with the LEDs, use semi-active until you can get it replaced.

 
Posted : July 22, 2019 8:54 am